Matter
What is the definition of matter?
Matter is everything that has a mass and occupies a volume.
Matter is made up of small _______.
particles
What is the process of a liquid becoming a gas called?
Evaporation.
What is Pressure?
Pressure is the result of the collision between the gas particles, and the walls of the container that contains it.
What is 250C in K?
298 K
How do we measure how much matter an object has?
Measuring an object's mass in kg tells us how much matter an object contains.
Which state of matter has the most intense forces of attraction?
Solid
What is the name of the process when a solid becomes a liquid?
Fusion
How would the pressure of a gas change (inc/dec/stay the same) if the temperature of the container was raised at constant Volume?
The pressure of the gas would increase.
What is the equation for Density?
d = m/v
What is a liquid?
A liquid is a state of matter that adapts to the shape of the container, maintaining its volume
Which state of matter (S, L, or G) has the highest internal energy?
Gas
What causes a solid to become a liquid, or a liquid to become a gas?
An increase in temperature (or an increase in internal energy)
How would the Pressure of a gas change if its container was shrunk in half at constant Temp?
The pressure would increase.
What does it mean for a solid to be elastic?
An elastic solid can return easily to its original shape after being deformed.
What do gasses do to occupy the available space?
Expand or contract
How is temperature and particle motion related?
Temperature is the measure of the internal energy of a substance. The higher the temperature, the greater the motion of particles and vice versa.
During melting and boiling, the temperature remains ______.
Constant.
How would the Volume of a gas be affected if the Pressure was decreased at constant Temperature?
The volume would increase.
Solubility is an example of a ______ property.
Specific
Does the volume of a solid change?
No
The volume of a solid is constant regardless of its container
What is unique about gasses that allows the particles to move around and easily adapt to different shapes?
1. The particles are farther apart and have lower forces of attraction
2. The bonds between particles are weak, so they can occupy all available space
What does it mean for a substance to change state?
The internal energy of a substance either increases or decreases.
At constant Volume, how would the pressure of 1 mole of CO2 gas react to the addition of 2 moles of CO2 gas?
The pressure would increase.
Give a scientific explanation of why we use salt to thaw ice and to make our pasta boil quicker.
The addition of salt particles into water disrupts the normal motion of the liquid. When freezing, this disruption leads to needing a lower temperature in order to freeze in a lattice.
When boiling water with salt in it, the addition of salt particles increases the boiling point, so the water boils hotter, and our food is cooked quicker.